16675709 has 2 divisors, whose sum is σ = 16675710. Its totient is φ = 16675708.

The previous prime is 16675679. The next prime is 16675721. The reversal of 16675709 is 90757661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12460900 + 4214809 = 3530^2 + 2053^2 .

It is a cyclic number.

It is not a de Polignac number, because 16675709 - 2²⁰ = 15627133 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16675739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8337854 + 8337855.

It is an arithmetic number, because the mean of its divisors is an integer number (8337855).

Almost surely, 2^16675709 is an apocalyptic number.

It is an amenable number.

16675709 is a deficient number, since it is larger than the sum of its proper divisors (1).

16675709 is an equidigital number, since it uses as much as digits as its factorization.

16675709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79380, while the sum is 41.

The square root of 16675709 is about 4083.5902096072. The cubic root of 16675709 is about 255.4826639483.

The spelling of 16675709 in words is "sixteen million, six hundred seventy-five thousand, seven hundred nine".